Subject:
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RE: Spybotics - A great disappointment
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Newsgroups:
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lugnet.robotics
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Date:
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Wed, 24 Jul 2002 17:48:13 GMT
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Original-From:
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Marco Correia <marco@soporcel.pt+stopspammers+>
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Reply-To:
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<MARCO@spamcakeSOPORCEL.PT>
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Viewed:
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2878 times
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> -----Original Message-----> Marco Correia
> Sent: Tuesday, July 23, 2002 5:44 PM
> > -----Original Message-----> Of Dave Baum
> > Sent: Tuesday, July 23, 2002 2:50 AM
> > It is programmed using visible light, but the commands are very
> > different from CodePilot/MicroScout. The protocol itself is just
> > 4800bps turned into light. The packets have a simple format
> > (preable, data bytes, checksum). The commands in the packets are
> > identical to RCX commands (minus a few commands that aren't
> > supported, plus a few new ones).
From what Jake said at lugnet.lego.direct and from what you say above,
I don't understand if IR or Visible Light (or both !?!?) are used to
download programs to the Spybot.
About VLL, from Jake McKee:
> [...]
> It is possible, though, to send and receive VLL messages through the light
> sensor and the red LED at the back of the robot. For that to work, the
> Spybot needs to be disconnected from the PC-cable.
> [...]
That's a *very good* thing, *both* VLL INPUT and OUTPUT in a IR capable
brick.
I don't know if the VLL input is treated like a VLL message (that's good) or
a VLL command (that's bad) making the Spybot do some pre-configured action,
like MicroScout.
About IR, from Jake McKee:
> [...]
> they use a 'standard' IR communication scheme. Very much like the RCX's
> but double the speed and half the message size, so four times as efficient.
> [...---...]
> Yes, a Spybot can send RCX/Scout messages and an RCX 2.0 (possibly also
> an RCX 1.x with 2.0 firmware - effective range may be shorter) can send
> Spybot messages, just like it can send LEGO Bionicle Manas control • messages.
> The Spybots use the same 3-channel RC protocol as the LEGO Bionicle Manas
> [...]
So, it looks like it accepts IR with the same protocol of MANAS
i.e. IR input @4800 (if I'm not mistaken)
and is capable of sending RCX/Scout compatible messages
i.e. IR output @2400 (again, if I'm not mistaken)
If, like RCX2, we can set the bps of IR, it will be possible to
do IR output @4800, so it looks like inter-Spybots comms through
IR is possible, like it is @2400 with RCX's and Scout's.
That makes this pBrick the most advanced one, comms-wise.
To me, that makes it a very usefull pBrick.
If all this is true, I will forget the nuisance of having built-in motors
like I already have on CyberMaster, MicroScout and Manas and built-in
Sensors like MicroScout.
For some projects, a Spybot could serve as an interface between a
CyberMaster and a RCX, through the use of VLL and IR using LEGO standard
firmware and comm protocols.
(CyberMaster will still be a "deaf" pBrick, this way though.)
CyberMaster<->RCX comms is already possible, using non-LEGO standard comm
protocols, etc...
This isn't necessarily a bad thing, but these custom made comm routines with
standard firmware, eat memory and cpu, especially the input ones, and have a
slower bps rate.
> So, at home tonight, I'll download the "newer" RIS 2.0 SDK (I
> think I still
> have the beta version, or something) and NQC 2.5 a1 and
> hopefully figure out
> what can be done with a Spybotics pBrick.
erm... I forgot I needed the Spybotics CD with all the .h header files
from the Include directory in the Spybotics :P
...so, I only had the chance to look at the nqc -api output.
Ok, slowly, I'm getting most of the info about Spybotics I want.
Let's wait for the next version of Dave Baum's NQC and John Hansen's BricxCC
with more Spybotics support :)
mc.
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Message is in Reply To:
 | | RE: Spybotics - A great disappointment
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| (...) So, in theory, comms between CyberMaster/RCX/Scout and Spybotics is possible, provided that a fiber optic is used and an emulator is coded, although, at 4800bps I don't know if that's feasible with standard firmware and NQC. (...) INPUT ? (...) (24 years ago, 23-Jul-02, to lugnet.robotics)
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